GRAPHITESEAL ULTRA 350 — Kinetics Line

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Note: Data shown are typical laboratory results provided as non-binding guidance. Max temperature and max pressure ratings are not for simultaneous use; allowable pressure decreases as temperature increases.

GRAPHITESEAL ULTRA 350 is a high-quality, non-asbestos gasket material based on aramid fibres, lamellar graphite, mineral fillers and NBR binder. The embedded graphite flakes provide exceptional resistance to temperature, mechanical stress and dynamic loads.

Combines very good thermal properties and chemical resistance to steam, oils, gases, fuels, lubricants, alkaline media and weak acids. Especially recommended for chemical, petro-chemical, construction, OEM industries and power plants. BAM approved for oxygen service. Antistick coating on one side facilitates disassembly.

Typical Applications

Steam lines & high-temperature piping

Chemical & petrochemical plant flanges

Oxygen service applications (BAM approved)

Power plants & OEM equipment

Dynamic load applications with thermal cycling

Industrial Grade Y sealing (BS 7531 / DIN 28091)

Technical Properties

Property	Value	Technical Meaning
Max. Service Temperature Continuous: 280°C · Steam: 250°C	350°C	Short-term peak temperature. For continuous duty limit to 280°C; for steam applications max 250°C.2
Max. Operating Pressure Dynamic industrial loads	100bar	High pressure capability suitable for dynamic industrial loads.3
Compressibility ASTM F36	10%	Low compressibility indicates a dense, high-strength material structure.1
Elastic Recovery ASTM F36	55%	Consistent recovery ensuring seal stability under thermal cycling.1
Tensile Strength ASTM F152 · across grain	11MPa	High mechanical integrity under thermal stress.4
Residual Stress DIN 52913 · 175°C / 16h	32MPa	Superior torque retention at 175°C; 25 MPa at 300°C.5
Specific Leak Rate DIN 3535-6 · nitrogen	0.08mg/s·m @ 2.0 mm	Standard leak rate for graphite-reinforced fibre materials.7
Thickness Increase — Oil ASTM F146 · IRM 903 / 150°C / 5h	5%	Very low swell in hot oil confirms excellent dimensional stability.7
Thickness Increase — Fuel ASTM F146 · Fuel B / 23°C / 5h	8%	Low swell in fuel confirms suitability for petrochemical service.7
Material Density Nominal value	1.6g/cm³	High density matrix ensures robust sealing performance.4

Compatible Media

Steam (to 250°C)

Oils & Lubricants

Fuels & Hydrocarbons

Gases & Oxygen

Alkalis & Weak Acids

Petrochemicals

Certifications & Approvals

Safety & Industrial

Germany · Oxygen service BAM

UK · Industrial sealing BS 7531 Grade Y

Germany · Material standard DIN 28091 FA-AC1-0

Food & Compliance

European Union · Food contact EU 1935/2004

Global · Composition Non-asbestos

Standard Supply Data

Sheet Sizes

1500 × 1500 mm

Also 3000 & 4500 mm lengths

Thickness (nominal)

0.5 / 1.0 / 1.5 / 2.0 / 3.0 mm

± 10% >1mm · ± 0.1mm ≤1mm

Colour

Graphite

Brand standard

Surface Finish

Antistick — one side

Facilitates disassembly

Test Standards & Notes

ASTM F36: Compressibility & Elastic Recovery

DIN 52913: Residual stress 32 MPa (175°C) / 25 MPa (300°C)

Temp: Peak 350°C · Cont. 280°C · Steam 250°C

Approvals: DIN 28091 FA-AC1-0 · BAM · BS 7531 Grade Y

Pressure: Max 100 bar, assembly & temperature dependent

ASTM F146 / DIN 3535-6: Thickness increase & nitrogen leak rate

ASTM F152: Tensile strength across grain